Supporters cheer as Republican vice presidential nominee Mike Pence speaks at a rally for he and presidential nominee Donald Trump at the SNHU Arena in Manchester, New Hampshire on November 7, 2016.

Democratic presidential nominee Hillary Clinton speaks at a campaign rally at Saint Anselm College in Goffstown, New Hampshire on October 24, 2016.

Democratic candidate for president Bernie Sanders speaks to the crowd gathered for a campaign rally at North High School in Worcester, Massachusetts on January 2, 2016.

Republican presidential nominee Donald Trump sprays water on to the crowd during a rally at the SNHU Arena in Manchester, New Hampshire on November 7, 2016.

Robert Binington of Sarasota, Florida holds up a 'Make America Great Again' hat while selling paraphernalia in support of Republican candidate for president Donald Trump prior to a rally for Trump at Plymouth State University ALLWell North in Holderness, New Hampshire on February 7, 2016. New Hampshire will hold the first primary in the country on February 9th.

A woman chants to show her support for Democratic candidate for president Hillary Clinton, prior to a Democratic candidates debate at St. Anselm College in Manchester, New Hampshire on December 19, 2015. This will be the third Democratic debate.

Eliza Walp of Chestertown, New York who works for the campaign for Democratic candidate for president Bernie Sanders, chants in support of Sanders while surrounded by Hillary Clinton supporters prior to a Democratic debate at St. Anselm College in Manchester, New Hampshire on December 19, 2015. This will be the third Democratic debate.

Mark Mooers, 9 of Manchester, New Hampshire, plays a game on his iPod while waiting with his family at a primary night watch party for Republican candidate for president Marco Rubio at the Radisson in Manchester, New Hampshire on February 9, 2016. Early results showed Rubio finishing in fifth place in the nations first Presidential Primary.

Democratic presidential candidate, Hillary Clinton, shakes hands with members of the audience as she heads to the stage for a Get Out The Vote rally at Alvirne High School in Hudson, New Hampshire on February 8, 2016. The event is Hillary Clinton's final pitch to potential voters before the New Hampshire Primary on Tuesday.

Democratic presidential candidate Bernie Sanders shakes hands with supporters after speaking at a Super Tuesday rally at the Champlain Valley Exposition in Essex Junction, Vermont on March 1, 2016.

Republican presidential candidate Donald Trump (L) jokes around with a campaign staffer while on a visit to the primary polling station at the Webster Elementary School in Manchester, New Hampshire on February 9, 2016. The New Hampshire presidential primary is the first in the nation and is the culmination of months of campaigning by a large field of presidential candidates.

Republican presidential candidate Marco Rubio walks past a group of campaign workers holding signs in front of the polling station for the presidential primary at the at the Gilbert H. Hood Middle School in Derry, New Hampshire on February 9, 2016.

Democratic candidate for president Bernie Sanders speaks to the crowd gathered for a campaign rally at North High School in Worcester, Massachusetts on January 2, 2016.

Republican vice presidential nominee Mike Pence speaks at a rally for he and presidential nominee Donald Trump at the SNHU Arena in Manchester, New Hampshire on November 7, 2016.

Republican presidential candidate Donald Trump waves to the crowd as he walks back to his motorcade after a visit to the primary polling station at the Webster Elementary School in Manchester, New Hampshire on February 9, 2016. The New Hampshire presidential primary is the first in the nation and is the culmination of months of campaigning by a large field of presidential candidates.

Taking an early seat and making a phone call, an early arriving delegate waits for the final session to begin at the 2012 Republican National Convention at the Tampa Bay Times Forum in Tampa, Florida on August 30, 2012.

Balloons surround Republican presidential nominee Mitt Romney after he accepted the party nomination on the final night of the 2012 Republican National Convention at the Tampa Bay Times Forum in Tampa on September 30, 2012.

James Mills (L) a volunteer for Democratic presidential candidate Hillary Clinton, hands out stickers before a Get Out The Vote rally at Alvirne High School in Hudson, New Hampshire on February 8, 2016. The event is Hillary Clinton's final pitch to potential voters before the New Hampshire Primary on Tuesday.

Two supporters of Democratic presidential nominee Hillary Clinton hide behind a campaign sign before the candidate speaks at a rally promoting her college tuition plan at The University of New Hampshire in Durham, New Hampshire on September 28, 2016.

Supporters of Republican candidate for President Donald Trump cheer for the candidate before his arrival at a rally at Plymouth State University in Holderness, New Hampshire on February 7, 2016. New Hampshire will hold the first primary in the nation on February 9th.

A supporter of Democratic presidential candidate Bernie Sanders, holds up a sign while waiting for the candidate to arrive at a Super Tuesday rally at the Champlain Valley Exposition in Essex Junction, Vermont on March 1, 2016.

Republican presidential candidate Donald Trump points to an American flag as he walks on stage for a town hall meeting at Pinkerton Academy in Derry, New Hampshire on August 19, 2015.

Supporters of Democratic presidential candidate Bernie Sanders waves signs and cheer while the candidate speaks at a Super Tuesday rally at the Champlain Valley Exposition in Essex Junction, Vermont on March 1, 2016.

A supporter of Republican candidate for President Donald Trump awaits the candidate arrival at a rally at Plymouth State University in Holderness, New Hampshire on February 7, 2016. New Hampshire will hold the first primary in the nation on February 9th.

A supporter of Democratic presidential candidate Bernie Sanders leans against a security barrier while waiting on the candidate to arrive at a Super Tuesday rally at the Champlain Valley Exposition in Essex Junction, Vermont on March 1, 2016.

Campaign lawn signs and an empty donut box litter the front entrance of the presidential primary polling station at the Webster Elementary School in Manchester, New Hampshire on February 9, 2016. The New Hampshire presidential primary is the first in the nation and is the culmination of months of campaigning by a large field of Presidential candidates.

A volunteer for Republican presidential nominee Donald Trump hands out signs before the candidates arrival for a rally at the SNHU Arena in Manchester, New Hampshire on November 7, 2016.

Democratic presidential candidate Hillary Clinton, poses for a photo with some fans after speaking at a Get Out The Vote rally at Alvirne High School in Hudson, New Hampshire on February 8, 2016. The event is Hillary Clinton's final pitch to potential voters before the New Hampshire Primary on Tuesday.

Donald Trump supporter Donald Ostie of Colebrook, New Hampshire takes a photo of the stage prior to a rally for Republican candidate for president Donald Trump at Plymouth State University in Holderness, New Hampshire on February 7, 2016. New Hampshire will hold the first primary in the nation on February 9th.

Former Massachusetts Governor and Republican presidential candidate Mitt Romney (C) serves up chili with his wife Ann Romney (R) just before formally announcing his candidacy at Scamman Farm in Stratham, New Hampshire on June 2, 2011.

Two the Hillary Clinton presidential campaign wave to cars in the snow outside of Alvirne High School in Hudson, New Hampshire on February 8, 2016. Hillary Clinton and her husband, former U.S. President Bill Clinton and daughter Chelsea Clinton are visiting the school for a Get Out The Vote organizing event. This will be Hillary Clinton's final pitch to potential voters before the New Hampshire Primary on Tuesday.

A supporter of Republican presidential candidate Marco Rubio clasps her hands as she watches the candidate speak at a Primary night watch party at the Radisson in Manchester, New Hampshire on February 9, 2016. Early results showed Rubio finishing in fifth place in the nations first Presidential Primary.

Doreen McGloughlin (2nd-L) and Bridget Trepsas (R) waitresses at the Dream Diner in Tyngsboro, Massachusetts await for the arrival of Republican presidential candidate Donald Trump at a campaign rally at Tyngsboro Elementary School in Tyngsboro, Massachusetts on October 16, 2015.

A supporter of Democratic presidential candidate Bernie Sanders watches from the back of the room as the candidate addresses the crowd at a Super Tuesday rally at the Champlain Valley Exposition in Essex Junction, Vermont on March 1, 2016.

David Rosane, of Paris, holds a sign in support of Democratic presidential candidate Bernie Sanders, while waiting for the candidate to arrive for a Super Tuesday rally at the Champlain Valley Exposition in Essex Junction, Vermont on March 1, 2016. Rosane cast an absentee ballot from Paris but flew back to Vermont recently to attend the rally.

Republican presidential nominee Donald Trump greets his fans after speaking at a campaign rally in Bedford, New Hampshire on September 29, 2016.

A man chants to show his support for Democratic candidate for president Hillary Clinton, prior to a Democratic candidates debate at St. Anselm College in Manchester, New Hampshire on December 19, 2015. This will be the third Democratic debate.

Republican presidential candidate Donald Trump waves to the crowd after speaking at the Executive Meeting of the New England Police Benevolent Association in the Sheraton Portsmouth Harborside Hotel in Portsmouth, New Hampshire on December 10, 2015. The group endorsed Mr. Trump for President.